Woodworking machine



, APPLICATION FILED NOV. 2. 1920.

H..sHAw. WOOQWORKING MACHINE.

PatentedlJan. 3,1922.

- 2 SHEEIS-SHEE'I I.

EHI

H'. SHAW.

WOODWORKING MACHINE.

APPLICATION FILED N0v.2,192o.

2 SHEE'S-SHEE'I 2.

Patented Jan, 3, 1922.

HENRY SHAW, 0F BIRMINGHAM, ENGLAND.

'WOODWORKING MACHINE.

Specification of Letters Patent. Patented J an; 3, 1922.

Application filed. November 2, 1920. Serial No. 421,322.

To all wlw/m t may concern.'

Be it known that l, HENRY SHAW, a subject of the King of Great Britain,residing at 109 Summer Lane, Birmingham, in the county ot VVar'wick,England, have invented a certain new or Improved Woodworking Machine;and I do hereby declare that the following is a full, clear, and exactdescription of the same. y,

rhis invention relates to a wood working machine and has for its objectto provide a machine of simple and inexpensive construction whereby woodworking operations, such as jointing, planing, moulding, tenoningchamtering or sawing may be conveniently carried out.

More particularly myinvention relates to that type of machine whichincludes a table pivotally mounted at one end, the table havin a guideand also having a Aslot through which a rotating tool or cutterprojects, the

arrangement being such that the wood to be operated upon is travelledValong' said table in contact `with the table and the guide and is actedupon by the cutter during its travel. In this class of apparatus it hasbeen proposed to provide spring members to press the wood `into contactboth with the table andtheguide.` v v i `The object ot the presentinvention isto provide `an Iimproved machine of simple f. constructionand in accordance therewith the machine comprises a'table of L or anglesection having a lug formed upon the under -side thereoiia base member,ay pivot pin carried byy said base member and adapted to engage thesaidlugto pivotally supportthe table, a spindle mounted on said base andadapted to `carry aL wood working tool, means for driving said woodworking tool,

an opening inthe table through which the wood working tool may project,means for varying the size ci' said opening'to accommodate differenttools, and an adjustable labutment adapted to control the height of thetable above the tool. j

Referring to the drawings:

Figure l is an elevation of one form of my improved machine.

Figure 2 isaplan view ofsame.' j j igures 3 and ltare sectionalelevation and plan view respectively.,

Figure 5 .illustrates onezof the spring holding'rods removed; v '1Figure 6 isan elevationl of a modified machine.

Figure 7 is a plan view.

Figure 8 is anend elevation. j

In the construction illustrated atV Figures 1- 5 the table 1 consistssimply of a niember of L or angle section provided withy a PATENTOFFICE. j

lug 2 upon its underside atone end whereby j it may be pivoted.Thistable is provided with a slot or opening 3 at about the centre ofits horizontal tace through which a wood werking tool may project. Thisopening may be adapted to receive lone of a series of plates 5 eachhaving a dile'rent sized opening to accommodate or suit different tools.

These plates are secured in position in the upper part of said openingand in countersunk relation with the horizontal'suri'ace of the table bymeans of plates`6 which are secured to the table by screws 7 yor othermeans and to the plates by means of the counter y sunk screw 8.

The holes in said `table or in said platesy may be of larger sectionalarea at the bottom than at the top so as to tit more closelyA to arotating circular tool. l

The plate is provided w1 th a bridge `piece 8a to strengthen the platebeing so formed to provide a clearance for the tool.

The vertical side of the table is also provided with a cut-away part 9to provide a clearance for the bridge piece. of the plate,

The table is pivoted to a base plate 10 whichis adapted to be secured toa bench or the like by holding down screws, and between the uppersurfaceof this base plate and the under surface of the table at theopposite end to that where the hingeis situatedis a screw device wherebythe tablemay be swung on its pivot and adjusted and, `locked into anydesired position.

This screw device may consist of a'simple set screw 11 with a milledhead 12 uponwhich rests the under side ot the table. A locking nut 13also having a milled head is placed on this screw and is adapted to bescrewed downV on to the upper surface of the base plate. f

As is usual in this class of machine, the tool is carried on a spindle14 arranged beneath the table and I may provide bearings 15 for saidspindle on an extension 16 of the base plate. It will .be understoodthat the said spindle may be provided with a belt pulley as 17 in theconstruction illustrated or with a driving motor or other drivingelement. It will also be understood that the end of the spindle whichprojects `beneath the table-is suitably shaped to accom any woodworking-.operation which can be carried out by a rotary tool. i Y

Springs of improved construction are prof vided whereby the wood may bekept in contact With the horizontal and vertical faces of lthe table. lmay provide tour oi said springs, all of whichjinay be of the samelconstruction. These springs also form "a guard for the tool. l

Each springV element may consist or" a rod 1'9, seeFigure 5, slidablymounted in a hole 20 in the horizontal or the vertical `face of thetable, a set screw 21 being provided whereby said rod may be adjustedinto any suitable position in relation to the table. @ne end ofthe rodis slotted 22 'and provided with a binding screw. 23. The slot in thelend. of the rod accommodates a steel or other plate 'spring 24consisting of a long blade having one end curved so as to give the wooda lead into the spring. lt willV beY understood that thewset screw whichlocks the spring carrying rod to the table, not only permits slidingmovement of said rod butpermits also Va rotary movement so that theangle between the spring and the oppo-V site face of the table can bevaried as desired. I niay provide two series of holes 2O on either sideof the tool so that they may be disposed in the direction in which thevwork is being fed.

` The table and the base plate may be inade froml simple castings Vwhichare given the necessary stiffness' by means ol' ribs or Y .webs 26.

The' table can be adjusted transversely in relation vto the base plateso thatv the gap in the table can be adjusted in relation tothe positionof the tool upon the driving spindle. This may be carried out by formingthe base plate with two spaced bearings 284-28, in whichvis liXed apivot 29. The pivoted table Vis provided with a downwardly projectinglug 30, the'tliiclrnessV of which is considerably :lessthan the distancebetween the spaced bearings upon the base plate. This lug is Ydrilled sothatit can be mountedl upon theV pivot. VPassing' radially into the lugis arj ranged a'set screwBl for locking thek table Vto the pivotin any;required' position. VBy

thisniethodn of: mounting the table upon` the base plate the table canybe moved transverselywith respect'to the base plate in addi- 'tion toVbeing pivoted thereto. Asfthe table Y may also include a guide forthe'work this method'of mounting the table enablestlre work tobe'positioned relative to Vthe tool with'a minimunircvf trouble. i

V`ln the'construction illustrated: -atlFigures Y 6 8, insteadofusing'gap:` plates, an arrangement maybe provided wherein the table isprovidedwith agap, the size of 'which can beY adjusted by two adjustableplates 35e-36 mounted upon the table. vThese Vplates are mounted ingrooves 37 upon thel table so that theycan slide therein, locking nuts,

' such as set screws 38 having awing nut 39,

being provided for securing them in an adjusted position, The adjacentends 40- ot these 1lates ma be under cut to a curvature approximating tothe periphery of the tools used. These plates can slide in the` groovesmoving either towards'or awayz from eachother so as toY adjust thelengthy of thegap through which the tool works.

One of the adjustable plates 316 carried by the table may be mounteduponl anurnber,

say four, adjustable set screws 41, by which the level of the plate canbe adjusted, thus rendering unnecessary the accurate machining of thesurface ol" the tablev which` would otherwise have to bedone to` ensurethat they table was quite square with the tool. These set screws passthrough holes in thel table and canbe screwed up Vor down` 4ifroni be;

neath the table. Thevother adjustableplate andpassing through aV hole inthe table and securedI by anut 'and preferably also be# neatli a springwasher 42. The two eccentric rollers may be operated by cranks 44e whichare connected Ibya couplingrodi` 45;

The purpose vof arranging Vthe movable plates adjustablefin height is sothat the i levelof them or the level of one of them can be adj usted; tocompensate fory the difference in thickness of the material before andafter it has been operated upon byv the tool'.n yIf theinaterialffundery treatmentjis caused'to slide along vone of the movableplates and isthenoperated uponbyr a planingy tool,l for instance, it isclear that after'passingfthe tool its thicknessfwill be reduced.Consequentlythe movable platev which is" situated beyond the tool willneedto beat a slightly higher llevel than the movable plate whichsupports tliematerial before' it reachesjthe tool.

It will be understood that although I have described a gap plate in oneconstruction and adjustable plates' inthe other forf'varying the sizeAof .theholeinatheftablegany Y other suitable meanszmafy'be provided forthis purpose,- ei'ther aloneorin` conjunction withv theadjustable'fplates. One other-'way ofproviding a suitable gappiece'tosuit the tool is by me'ans'of a piece of wood of a suitable size to fitwithin Ythe hole in the table',

the gap beingY subsequently cut by the wood 1 'Working tool itself. lnthis Way a suitable gap piece can be easily and cheaply produced for anytool.

lt Will also be understood that l may also use a gap piece asillustrated in Figures 3 and l in the machinery having the adjustableplates for certain operations, to which the gap piece may be moresuited, the table being,l provided With a holeto receive the plate. i

What l claim then is t l. A Wood Working machine comprising a table ofangle section7 a base member. a pair of spaced bearings carried by saidbase member, a pivot pin disposed between and con` necting said spacedbearings, a lug on the under side of the table which is slidably andpivotall,v mounted on the pivot pin to permit transverse and pivotalmovement thereof, means for securing said lug in its transverselyadjusted position, an adjustable abutment on said base adapted to limitthe pivotal movement ot' said table, a spindle carried by the base, aWood Working tool carried by said spindle adapted to project through anopening in the table, and means for varying the size of said opening toaccommodate different tools.

2. A Wood Working machine comprising a table of angle section, a basemember, a pair of spaced bearings carried by said base member, a pivotpin disposed between and connecting said spaced bearings, a lug on theJunder side of the table which is slidably and pivotally mounted on thepivot pin to permit transverse and pivotal movement thereof, means forsecuring said lug in its trans-- versely adjusted position, anadjustable abutment on said base adapted to limit the pivotal movementvof said table, a spindle carried by the base, a Wood Working toolcarried by said spindle adapted to project through an opening in thetable, and a pair of adjustable plates slidably mounted on said table tovary the size of theopening in the table. i

8. A Wood Working machine comprising a table of angle section, a lug. onthe under` side of said table,a base member, a pivot pin carried by saidbase member and adapt ed to engage the said lug to pivotally support thetable, an adjustable abutment on f said base adapted to control theheight of said table, a spindle mounted on said base, a Wood Working'tool carried by said base and adapted to project through an opening inthe table, a pair of adjustable plates slidably mounted on said table tovary the size of said opening to accommodate different tools, means foradjusting the heights of said plates relative to the table and to eachother, and means for securing them in their adjusted position.

In Witnesswhereof I aflix my signature.

HENRY SHAW.

